1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
5 * Author: Hariharan Thantry <thantry@users.sourceforge.net>
7 * This file is part of Lustre, http://www.lustre.org.
9 * Lustre is free software; you can redistribute it and/or
10 * modify it under the terms of version 2 of the GNU General Public
11 * License as published by the Free Software Foundation.
13 * Lustre is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with Lustre; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 # define EXPORT_SYMTAB
26 #define DEBUG_SUBSYSTEM S_CLASS
29 # include <linux/config.h>
30 # include <linux/module.h>
31 # include <linux/version.h>
32 # include <linux/slab.h>
33 # include <linux/types.h>
34 # if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
35 # include <asm/statfs.h>
37 # include <linux/seq_file.h>
38 #else /* __KERNEL__ */
39 # include <liblustre.h>
42 #include <linux/obd_class.h>
43 #include <linux/lprocfs_status.h>
44 #include <linux/lustre_fsfilt.h>
46 #if defined(LPROCFS) && defined(__KERNEL__)
48 struct proc_dir_entry *lprocfs_srch(struct proc_dir_entry *head,
51 struct proc_dir_entry *temp;
57 while (temp != NULL) {
58 if (strcmp(temp->name, name) == 0)
66 /* lprocfs API calls */
68 int lprocfs_add_vars(struct proc_dir_entry *root, struct lprocfs_vars *list,
71 if (root == NULL || list == NULL)
74 while (list->name != NULL) {
75 struct proc_dir_entry *cur_root, *proc;
76 char *pathcopy, *cur, *next, pathbuf[64];
77 int pathsize = strlen(list->name) + 1;
82 /* need copy of path for strsep */
83 if (strlen(list->name) > sizeof(pathbuf) - 1) {
84 OBD_ALLOC(pathcopy, pathsize);
92 strcpy(pathcopy, list->name);
94 while (cur_root != NULL && (cur = strsep(&next, "/"))) {
95 if (*cur =='\0') /* skip double/trailing "/" */
98 proc = lprocfs_srch(cur_root, cur);
99 CDEBUG(D_OTHER, "cur_root=%s, cur=%s, next=%s, (%s)\n",
100 cur_root->name, cur, next,
101 (proc ? "exists" : "new"));
103 cur_root = (proc ? proc :
104 proc_mkdir(cur, cur_root));
105 } else if (proc == NULL) {
109 if (list->write_fptr)
111 proc = create_proc_entry(cur, mode, cur_root);
115 if (pathcopy != pathbuf)
116 OBD_FREE(pathcopy, pathsize);
118 if (cur_root == NULL || proc == NULL) {
119 CERROR("LprocFS: No memory to create /proc entry %s",
124 proc->read_proc = list->read_fptr;
125 proc->write_proc = list->write_fptr;
126 proc->data = (list->data ? list->data : data);
132 void lprocfs_remove(struct proc_dir_entry *root)
134 struct proc_dir_entry *temp = root;
135 struct proc_dir_entry *rm_entry;
136 struct proc_dir_entry *parent;
138 LASSERT(root != NULL);
139 parent = root->parent;
140 LASSERT(parent != NULL);
143 while (temp->subdir != NULL)
149 /* Memory corruption once caused this to fail, and
150 without this LASSERT we would loop here forever. */
151 LASSERTF(strlen(rm_entry->name) == rm_entry->namelen,
152 "0x%p %s/%s len %d\n", rm_entry, temp->name,
153 rm_entry->name, (int)strlen(rm_entry->name));
155 remove_proc_entry(rm_entry->name, rm_entry->parent);
161 struct proc_dir_entry *lprocfs_register(const char *name,
162 struct proc_dir_entry *parent,
163 struct lprocfs_vars *list, void *data)
165 struct proc_dir_entry *newchild;
167 newchild = lprocfs_srch(parent, name);
168 if (newchild != NULL) {
169 CERROR(" Lproc: Attempting to register %s more than once \n",
171 return ERR_PTR(-EALREADY);
174 newchild = proc_mkdir(name, parent);
175 if (newchild != NULL && list != NULL) {
176 int rc = lprocfs_add_vars(newchild, list, data);
178 lprocfs_remove(newchild);
185 /* Generic callbacks */
187 int lprocfs_rd_u64(char *page, char **start, off_t off,
188 int count, int *eof, void *data)
190 LASSERT(data != NULL);
192 return snprintf(page, count, LPU64"\n", *(__u64 *)data);
195 int lprocfs_rd_uuid(char *page, char **start, off_t off, int count,
196 int *eof, void *data)
198 struct obd_device *dev = (struct obd_device*)data;
200 LASSERT(dev != NULL);
202 return snprintf(page, count, "%s\n", dev->obd_uuid.uuid);
205 int lprocfs_rd_name(char *page, char **start, off_t off, int count,
206 int *eof, void* data)
208 struct obd_device *dev = (struct obd_device *)data;
210 LASSERT(dev != NULL);
211 LASSERT(dev->obd_name != NULL);
213 return snprintf(page, count, "%s\n", dev->obd_name);
216 int lprocfs_rd_fstype(char *page, char **start, off_t off, int count, int *eof,
219 struct obd_device *obd = (struct obd_device *)data;
221 LASSERT(obd != NULL);
222 LASSERT(obd->obd_fsops != NULL);
223 LASSERT(obd->obd_fsops->fs_type != NULL);
224 return snprintf(page, count, "%s\n", obd->obd_fsops->fs_type);
227 int lprocfs_rd_blksize(char *page, char **start, off_t off, int count,
228 int *eof, void *data)
230 struct obd_statfs osfs;
231 int rc = obd_statfs(data, &osfs, jiffies - HZ);
234 rc = snprintf(page, count, "%u\n", osfs.os_bsize);
239 int lprocfs_rd_kbytestotal(char *page, char **start, off_t off, int count,
240 int *eof, void *data)
242 struct obd_statfs osfs;
243 int rc = obd_statfs(data, &osfs, jiffies - HZ);
245 __u32 blk_size = osfs.os_bsize >> 10;
246 __u64 result = osfs.os_blocks;
248 while (blk_size >>= 1)
252 rc = snprintf(page, count, LPU64"\n", result);
257 int lprocfs_rd_kbytesfree(char *page, char **start, off_t off, int count,
258 int *eof, void *data)
260 struct obd_statfs osfs;
261 int rc = obd_statfs(data, &osfs, jiffies - HZ);
263 __u32 blk_size = osfs.os_bsize >> 10;
264 __u64 result = osfs.os_bfree;
266 while (blk_size >>= 1)
270 rc = snprintf(page, count, LPU64"\n", result);
275 int lprocfs_rd_kbytesavail(char *page, char **start, off_t off, int count,
276 int *eof, void *data)
278 struct obd_statfs osfs;
279 int rc = obd_statfs(data, &osfs, jiffies - HZ);
281 __u32 blk_size = osfs.os_bsize >> 10;
282 __u64 result = osfs.os_bavail;
284 while (blk_size >>= 1)
288 rc = snprintf(page, count, LPU64"\n", result);
293 int lprocfs_rd_filestotal(char *page, char **start, off_t off, int count,
294 int *eof, void *data)
296 struct obd_statfs osfs;
297 int rc = obd_statfs(data, &osfs, jiffies - HZ);
300 rc = snprintf(page, count, LPU64"\n", osfs.os_files);
306 int lprocfs_rd_filesfree(char *page, char **start, off_t off, int count,
307 int *eof, void *data)
309 struct obd_statfs osfs;
310 int rc = obd_statfs(data, &osfs, jiffies - HZ);
313 rc = snprintf(page, count, LPU64"\n", osfs.os_ffree);
318 int lprocfs_rd_server_uuid(char *page, char **start, off_t off, int count,
319 int *eof, void *data)
321 struct obd_device *obd = (struct obd_device *)data;
322 struct obd_import *imp;
323 char *imp_state_name = NULL;
325 LASSERT(obd != NULL);
326 imp = obd->u.cli.cl_import;
327 imp_state_name = ptlrpc_import_state_name(imp->imp_state);
329 return snprintf(page, count, "%s\t%s\n",
330 imp->imp_target_uuid.uuid, imp_state_name);
333 int lprocfs_rd_conn_uuid(char *page, char **start, off_t off, int count,
334 int *eof, void *data)
336 struct obd_device *obd = (struct obd_device*)data;
337 struct ptlrpc_connection *conn;
339 LASSERT(obd != NULL);
340 conn = obd->u.cli.cl_import->imp_connection;
341 LASSERT(conn != NULL);
343 return snprintf(page, count, "%s\n", conn->c_remote_uuid.uuid);
346 int lprocfs_rd_num_exports(char *page, char **start, off_t off, int count,
347 int *eof, void *data)
349 struct obd_device *obd = (struct obd_device*)data;
351 LASSERT(obd != NULL);
353 return snprintf(page, count, "%u\n", obd->obd_num_exports);
356 int lprocfs_rd_numrefs(char *page, char **start, off_t off, int count,
357 int *eof, void *data)
359 struct obd_type *class = (struct obd_type*) data;
361 LASSERT(class != NULL);
363 return snprintf(page, count, "%d\n", class->typ_refcnt);
366 int lprocfs_obd_attach(struct obd_device *dev, struct lprocfs_vars *list)
370 LASSERT(dev != NULL);
371 LASSERT(dev->obd_type != NULL);
372 LASSERT(dev->obd_type->typ_procroot != NULL);
374 dev->obd_proc_entry = lprocfs_register(dev->obd_name,
375 dev->obd_type->typ_procroot,
377 if (IS_ERR(dev->obd_proc_entry)) {
378 rc = PTR_ERR(dev->obd_proc_entry);
379 dev->obd_proc_entry = NULL;
384 int lprocfs_obd_detach(struct obd_device *dev)
386 if (dev && dev->obd_proc_entry) {
387 lprocfs_remove(dev->obd_proc_entry);
388 dev->obd_proc_entry = NULL;
393 struct lprocfs_stats *lprocfs_alloc_stats(unsigned int num)
395 struct lprocfs_stats *stats;
396 struct lprocfs_percpu *percpu;
397 unsigned int percpusize;
403 OBD_ALLOC(stats, offsetof(typeof(*stats), ls_percpu[num_online_cpus()]));
407 percpusize = L1_CACHE_ALIGN(offsetof(typeof(*percpu), lp_cntr[num]));
408 stats->ls_percpu_size = num_online_cpus() * percpusize;
409 OBD_ALLOC(stats->ls_percpu[0], stats->ls_percpu_size);
410 if (stats->ls_percpu[0] == NULL) {
411 OBD_FREE(stats, offsetof(typeof(*stats),
412 ls_percpu[num_online_cpus()]));
417 for (i = 1; i < num_online_cpus(); i++)
418 stats->ls_percpu[i] = (void *)(stats->ls_percpu[i - 1]) +
424 void lprocfs_free_stats(struct lprocfs_stats *stats)
426 if (stats->ls_num == 0)
429 OBD_FREE(stats->ls_percpu[0], stats->ls_percpu_size);
430 OBD_FREE(stats, offsetof(typeof(*stats), ls_percpu[num_online_cpus()]));
433 /* Reset counter under lock */
434 int lprocfs_counter_write(struct file *file, const char *buffer,
435 unsigned long count, void *data)
441 static void *lprocfs_stats_seq_start(struct seq_file *p, loff_t *pos)
443 struct lprocfs_stats *stats = p->private;
444 /* return 1st cpu location */
445 return (*pos >= stats->ls_num) ? NULL :
446 &(stats->ls_percpu[0]->lp_cntr[*pos]);
449 static void lprocfs_stats_seq_stop(struct seq_file *p, void *v)
453 static void *lprocfs_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
455 struct lprocfs_stats *stats = p->private;
457 return (*pos >= stats->ls_num) ? NULL :
458 &(stats->ls_percpu[0]->lp_cntr[*pos]);
461 /* seq file export of one lprocfs counter */
462 static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
464 struct lprocfs_stats *stats = p->private;
465 struct lprocfs_counter *cntr = v;
466 struct lprocfs_counter t, ret = { .lc_min = ~(__u64)0 };
469 if (cntr == &(stats->ls_percpu[0])->lp_cntr[0]) {
471 do_gettimeofday(&now);
472 rc = seq_printf(p, "%-25s %lu.%lu secs.usecs\n",
473 "snapshot_time", now.tv_sec, now.tv_usec);
477 idx = cntr - &(stats->ls_percpu[0])->lp_cntr[0];
479 for (i = 0; i < num_online_cpus(); i++) {
480 struct lprocfs_counter *percpu_cntr =
481 &(stats->ls_percpu[i])->lp_cntr[idx];
485 centry = atomic_read(&percpu_cntr->lc_cntl.la_entry);
486 t.lc_count = percpu_cntr->lc_count;
487 t.lc_sum = percpu_cntr->lc_sum;
488 t.lc_min = percpu_cntr->lc_min;
489 t.lc_max = percpu_cntr->lc_max;
490 t.lc_sumsquare = percpu_cntr->lc_sumsquare;
491 } while (centry != atomic_read(&percpu_cntr->lc_cntl.la_entry) &&
492 centry != atomic_read(&percpu_cntr->lc_cntl.la_exit));
493 ret.lc_count += t.lc_count;
494 ret.lc_sum += t.lc_sum;
495 if (t.lc_min < ret.lc_min)
496 ret.lc_min = t.lc_min;
497 if (t.lc_max > ret.lc_max)
498 ret.lc_max = t.lc_max;
499 ret.lc_sumsquare += t.lc_sumsquare;
502 rc = seq_printf(p, "%-25s "LPU64" samples [%s]", cntr->lc_name,
503 ret.lc_count, cntr->lc_units);
507 if ((cntr->lc_config & LPROCFS_CNTR_AVGMINMAX) && (ret.lc_count > 0)) {
508 rc = seq_printf(p, " "LPU64" "LPU64" "LPU64,
509 ret.lc_min, ret.lc_max, ret.lc_sum);
512 if (cntr->lc_config & LPROCFS_CNTR_STDDEV)
513 rc = seq_printf(p, " "LPU64, ret.lc_sumsquare);
517 rc = seq_printf(p, "\n");
519 return (rc < 0) ? rc : 0;
522 struct seq_operations lprocfs_stats_seq_sops = {
523 start: lprocfs_stats_seq_start,
524 stop: lprocfs_stats_seq_stop,
525 next: lprocfs_stats_seq_next,
526 show: lprocfs_stats_seq_show,
529 static int lprocfs_stats_seq_open(struct inode *inode, struct file *file)
531 struct proc_dir_entry *dp = PDE(inode);
532 struct seq_file *seq;
535 rc = seq_open(file, &lprocfs_stats_seq_sops);
538 seq = file->private_data;
539 seq->private = dp->data;
543 struct file_operations lprocfs_stats_seq_fops = {
544 .owner = THIS_MODULE,
545 .open = lprocfs_stats_seq_open,
548 .release = seq_release,
551 int lprocfs_register_stats(struct proc_dir_entry *root, const char *name,
552 struct lprocfs_stats *stats)
554 struct proc_dir_entry *entry;
555 LASSERT(root != NULL);
557 entry = create_proc_entry(name, 0444, root);
560 entry->proc_fops = &lprocfs_stats_seq_fops;
561 entry->data = (void *)stats;
562 entry->write_proc = lprocfs_counter_write;
566 void lprocfs_counter_init(struct lprocfs_stats *stats, int index,
567 unsigned conf, const char *name, const char *units)
569 struct lprocfs_counter *c;
572 LASSERT(stats != NULL);
573 for (i = 0; i < num_online_cpus(); i++) {
574 c = &(stats->ls_percpu[i]->lp_cntr[index]);
576 c->lc_min = ~(__u64)0;
581 EXPORT_SYMBOL(lprocfs_counter_init);
583 #define LPROCFS_OBD_OP_INIT(base, stats, op) \
585 unsigned int coffset = base + OBD_COUNTER_OFFSET(op); \
586 LASSERT(coffset < stats->ls_num); \
587 lprocfs_counter_init(stats, coffset, 0, #op, "reqs"); \
590 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
592 struct lprocfs_stats *stats;
593 unsigned int num_stats;
596 LASSERT(obd->obd_stats == NULL);
597 LASSERT(obd->obd_proc_entry != NULL);
598 LASSERT(obd->obd_cntr_base == 0);
600 num_stats = 1 + OBD_COUNTER_OFFSET(init_ea_size) +
602 stats = lprocfs_alloc_stats(num_stats);
606 LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
607 LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
608 LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info);
609 LPROCFS_OBD_OP_INIT(num_private_stats, stats, attach);
610 LPROCFS_OBD_OP_INIT(num_private_stats, stats, detach);
611 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
612 LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
613 LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
614 LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
615 LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
616 LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
617 LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
618 LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
619 LPROCFS_OBD_OP_INIT(num_private_stats, stats, packmd);
620 LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpackmd);
621 LPROCFS_OBD_OP_INIT(num_private_stats, stats, revalidate_md);
622 LPROCFS_OBD_OP_INIT(num_private_stats, stats, preallocate);
623 LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
624 LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
625 LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
626 LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
627 LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr_async);
628 LPROCFS_OBD_OP_INIT(num_private_stats, stats, brw);
629 LPROCFS_OBD_OP_INIT(num_private_stats, stats, brw_async);
630 LPROCFS_OBD_OP_INIT(num_private_stats, stats, prep_async_page);
631 LPROCFS_OBD_OP_INIT(num_private_stats, stats, queue_async_io);
632 LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_async_flags);
633 LPROCFS_OBD_OP_INIT(num_private_stats, stats, queue_group_io);
634 LPROCFS_OBD_OP_INIT(num_private_stats, stats, trigger_group_io);
635 LPROCFS_OBD_OP_INIT(num_private_stats, stats, teardown_async_page);
636 LPROCFS_OBD_OP_INIT(num_private_stats, stats, punch);
637 LPROCFS_OBD_OP_INIT(num_private_stats, stats, sync);
638 LPROCFS_OBD_OP_INIT(num_private_stats, stats, migrate);
639 LPROCFS_OBD_OP_INIT(num_private_stats, stats, copy);
640 LPROCFS_OBD_OP_INIT(num_private_stats, stats, iterate);
641 LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
642 LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
643 LPROCFS_OBD_OP_INIT(num_private_stats, stats, write_extents);
644 LPROCFS_OBD_OP_INIT(num_private_stats, stats, enqueue);
645 LPROCFS_OBD_OP_INIT(num_private_stats, stats, match);
646 LPROCFS_OBD_OP_INIT(num_private_stats, stats, change_cbdata);
647 LPROCFS_OBD_OP_INIT(num_private_stats, stats, cancel);
648 LPROCFS_OBD_OP_INIT(num_private_stats, stats, cancel_unused);
649 LPROCFS_OBD_OP_INIT(num_private_stats, stats, san_preprw);
650 LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
651 LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
652 LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_init);
653 LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_finish);
654 LPROCFS_OBD_OP_INIT(num_private_stats, stats, llog_connect);
655 LPROCFS_OBD_OP_INIT(num_private_stats, stats, pin);
656 LPROCFS_OBD_OP_INIT(num_private_stats, stats, unpin);
657 LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
658 LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
659 LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_ea_size);
661 for (i = num_private_stats; i < num_stats; i++) {
662 /* If this LBUGs, it is likely that an obd
663 * operation was added to struct obd_ops in
664 * <linux/obd.h>, and that the corresponding line item
665 * LPROCFS_OBD_OP_INIT(.., .., opname)
666 * is missing from the list above. */
667 if (stats->ls_percpu[0]->lp_cntr[i].lc_name == NULL) {
668 CERROR("Missing obd_stat initializer obd_op "
669 "operation at offset %d. Aborting.\n",
670 i - num_private_stats);
674 rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
676 lprocfs_free_stats(stats);
678 obd->obd_stats = stats;
679 obd->obd_cntr_base = num_private_stats;
684 void lprocfs_free_obd_stats(struct obd_device *obd)
686 struct lprocfs_stats *stats = obd->obd_stats;
689 obd->obd_stats = NULL;
690 lprocfs_free_stats(stats);
694 int lprocfs_write_helper(const char *buffer, unsigned long count,
697 char kernbuf[20], *end;
699 if (count > (sizeof(kernbuf) - 1))
702 if (copy_from_user(kernbuf, buffer, count))
705 kernbuf[count] = '\0';
707 *val = simple_strtol(kernbuf, &end, 0);
714 int lprocfs_write_u64_helper(const char *buffer, unsigned long count,
717 char kernbuf[22], *end;
719 if (count > (sizeof(kernbuf) - 1))
722 if (copy_from_user(kernbuf, buffer, count))
725 kernbuf[count] = '\0';
727 *val = simple_strtoull(kernbuf, &end, 0);
734 int lprocfs_obd_seq_create(struct obd_device *dev, char *name, mode_t mode,
735 struct file_operations *seq_fops, void *data)
737 struct proc_dir_entry *entry;
740 entry = create_proc_entry(name, mode, dev->obd_proc_entry);
743 entry->proc_fops = seq_fops;
748 EXPORT_SYMBOL(lprocfs_obd_seq_create);
750 void lprocfs_oh_tally(struct obd_histogram *oh, unsigned int value)
754 if (value >= OBD_HIST_MAX)
755 value = OBD_HIST_MAX - 1;
757 spin_lock_irqsave(&oh->oh_lock, flags);
758 oh->oh_buckets[value]++;
759 spin_unlock_irqrestore(&oh->oh_lock, flags);
761 EXPORT_SYMBOL(lprocfs_oh_tally);
763 void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
767 for (val = 0; ((1 << val) < value) && (val <= OBD_HIST_MAX); val++)
770 lprocfs_oh_tally(oh, val);
772 EXPORT_SYMBOL(lprocfs_oh_tally_log2);
774 unsigned long lprocfs_oh_sum(struct obd_histogram *oh)
776 unsigned long ret = 0;
779 for (i = 0; i < OBD_HIST_MAX; i++)
780 ret += oh->oh_buckets[i];
783 EXPORT_SYMBOL(lprocfs_oh_sum);
785 void lprocfs_oh_clear(struct obd_histogram *oh)
788 spin_lock_irqsave(&oh->oh_lock, flags);
789 memset(oh->oh_buckets, 0, sizeof(oh->oh_buckets));
790 spin_unlock_irqrestore(&oh->oh_lock, flags);
792 EXPORT_SYMBOL(lprocfs_oh_clear);
796 EXPORT_SYMBOL(lprocfs_register);
797 EXPORT_SYMBOL(lprocfs_srch);
798 EXPORT_SYMBOL(lprocfs_remove);
799 EXPORT_SYMBOL(lprocfs_add_vars);
800 EXPORT_SYMBOL(lprocfs_obd_attach);
801 EXPORT_SYMBOL(lprocfs_obd_detach);
802 EXPORT_SYMBOL(lprocfs_alloc_stats);
803 EXPORT_SYMBOL(lprocfs_free_stats);
804 EXPORT_SYMBOL(lprocfs_register_stats);
805 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
806 EXPORT_SYMBOL(lprocfs_free_obd_stats);
808 EXPORT_SYMBOL(lprocfs_rd_u64);
809 EXPORT_SYMBOL(lprocfs_rd_uuid);
810 EXPORT_SYMBOL(lprocfs_rd_name);
811 EXPORT_SYMBOL(lprocfs_rd_fstype);
812 EXPORT_SYMBOL(lprocfs_rd_server_uuid);
813 EXPORT_SYMBOL(lprocfs_rd_conn_uuid);
814 EXPORT_SYMBOL(lprocfs_rd_num_exports);
815 EXPORT_SYMBOL(lprocfs_rd_numrefs);
817 EXPORT_SYMBOL(lprocfs_rd_blksize);
818 EXPORT_SYMBOL(lprocfs_rd_kbytestotal);
819 EXPORT_SYMBOL(lprocfs_rd_kbytesfree);
820 EXPORT_SYMBOL(lprocfs_rd_kbytesavail);
821 EXPORT_SYMBOL(lprocfs_rd_filestotal);
822 EXPORT_SYMBOL(lprocfs_rd_filesfree);
824 EXPORT_SYMBOL(lprocfs_write_helper);
825 EXPORT_SYMBOL(lprocfs_write_u64_helper);